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First-principles calculations to investigate structural and thermodynamic properties of Ni2LaZ (Z = As, Sb and Bi) Heusler alloys

  • Amal Moussali
  • Mahdad Benzardjab Amina
  • Benattou Fassi
  • Ibrahim Ameri
  • Mohammed Ameri
  • Y. Al-DouriEmail author
Original Paper
  • 20 Downloads

Abstract

Structural, electronic, elastic and thermodynamic properties of Ni2LaZ (Z = As, Sb and Bi) Heusler alloys based on rare earth element have been investigated using full-potential linear muffin-tin orbital (FP-LMTO) method within generalized gradient approximation (GGA) in the frame of density functional theory (DFT). By using total energy variations, the independent elastic constants and their pressure dependence have been determined. Also, anisotropic parameter (A), shear modulus (G), Young modulus (E), Poisson’s ratio (ν), ratio (B/G) are calculated. Using quasi-harmonic Debye model, thermodynamic properties of Ni2LaZ (Z = As, Sb and Bi) Heusler alloys are investigated in temperature range 0–1200 K and pressure range 0–50 GPa. The temperature and pressure effects on the unit cell volume, bulk modulus (B), heat capacities (Cv) at stable volume, (Cp), Debye temperatures (θD), Gibbs energies (G), thermal expansion coefficients (α) and entropies (S) are determined from non-equilibrium Gibbs functions. This study allows to understand deeply the structural and thermodynamic properties of Ni2LaZ (Z = As, Sb and Bi) Heusler alloys in shortest time and cost-effective.

Keywords

FP-LMTO Heusler alloys GGA Structural Thermodynamic 

PACS Nos.

31.15.E 61.66.Dk 71.15.Mb 03.75.Hh 67.40.Kh 

Notes

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Copyright information

© Indian Association for the Cultivation of Science 2019

Authors and Affiliations

  • Amal Moussali
    • 1
  • Mahdad Benzardjab Amina
    • 1
  • Benattou Fassi
    • 2
  • Ibrahim Ameri
    • 3
  • Mohammed Ameri
    • 1
    • 3
  • Y. Al-Douri
    • 4
    • 5
    • 6
    Email author
  1. 1.Laboratory of Physical Chemistry of Advanced MaterialsUniversity of Djillali LiabesSid Bel AbbesAlgeria
  2. 2.Telecommunications and Digital Signal Processing Laboratory, Faculty of Electrical EngineeringUniversity of Djillali LiabesSidi Bel AbbesAlgeria
  3. 3.Physics Department, Faculty of ScienceUniversity of Sidi Bel AbbesSidi Bel AbbesAlgeria
  4. 4.University Research Center, Cihan University SulaimaniyaSulaimaniyaIraq
  5. 5.Nanotechnology and Catalysis Research Center (NANOCAT), University of MalayaKuala LumpurMalaysia
  6. 6.Department of Mechatronics Engineering, Faculty of Engineering and Natural SciencesBahcesehir UniversityBesiktas, IstanbulTurkey

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